rte_cpuflags.h File Reference

#include "rte_common.h"
#include <errno.h>

Go to the source code of this file.

Functions
__extension__ const char *	rte_cpu_get_flag_name (enum rte_cpu_flag_t feature)
__extension__ int	rte_cpu_get_flag_enabled (enum rte_cpu_flag_t feature)
__rte_deprecated void	rte_cpu_check_supported (void)
int	rte_cpu_is_supported (void)

Detailed Description

Architecture specific API to determine available CPU features at runtime.

Definition in file rte_cpuflags.h.

Function Documentation

__extension__ const char* rte_cpu_get_flag_name

(

enum rte_cpu_flag_t

feature

)

Get name of CPU flag

Parameters

feature

CPU flag ID

Returns

flag name NULL if flag ID is invalid

__extension__ int rte_cpu_get_flag_enabled

(

enum rte_cpu_flag_t

feature

)

Function for checking a CPU flag availability

Parameters

feature

CPU flag to query CPU for

Returns

1 if flag is available 0 if flag is not available -ENOENT if flag is invalid

__rte_deprecated void rte_cpu_check_supported

(

void

)

This function checks that the currently used CPU supports the CPU features that were specified at compile time. It is called automatically within the EAL, so does not need to be used by applications.

int rte_cpu_is_supported

(

void

)

This function checks that the currently used CPU supports the CPU features that were specified at compile time. It is called automatically within the EAL, so does not need to be used by applications. This version returns a result so that decisions may be made (for instance, graceful shutdowns).